underground

• The permeability of a soil is important for calculations of underground flow .
  土的渗透性对于地下液流的计算很为重要。
• Neither of the underground installations was greatly affected by the blast .
  上述两处地下装置均未受到爆震的严重影响。
• Natural replenishment of this vast supply of underground water occurs very slowly .
  靠自然补充大量地下水是十分缓慢的。
• A sinks a well on his land to abstract underground water beneath b's land .
  某甲在自己的土地上打井汲取某乙土地下的地下水。
• When he was doing underground work he was arrested because a renegade informed against him .
  他做地下工作时，曾因叛徒告密而被捕。
• They stayed underground for twenty minutes and waited for the siren to sound again .
  他们在地下呆了二十分钟，等候警报器再一次响起。
• These leaves arise from an underground stem--rhizome--from which also extend the roots .
  这些叶都由地下茎（根茎）产生，地下茎也有根。
• The diagenetic state of a deposit might also be connected with the underground temperatures .
  一个矿床的成岩状态也可能和地下温度有关。
• He crossed the lobby and went down the stairs to churchill's underground headquarters .
  他穿过门廊，下了台阶，朝邱吉尔的地下指挥所走去。